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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Nuclear Science and Engineering
November 2025
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October 2025
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Latest News
NEA report calls for more accurate data on SNF heat decay
The OECD Nuclear Energy Agency has issued a report calling for more-detailed information on tracking the decay heat of spent nuclear fuel from light water reactors. According to the NEA, the report highlights the increasing importance of accurate decay heat estimations due to evolving fuel characteristics, including higher initial fuel enrichment, increased burn-up rates, and extended reactor cycle lengths.
The report, Summary of the NEA Assessment on Spent Nuclear Fuel Decay Heat for Light Water Reactors, summarizes the findings of a subgroup of the NEA’s Working Party on Nuclear Criticality Safety (WPNCS), which ran from January 2022 to January 2024.
Technical Session|Sponsored by RPD
Tuesday, November 15, 2022|3:15–5:00PM MST|Sonoran 7
Session Chair:
Massimiliano Fratoni
Session Organizer:
Alternate Chair:
Pavel V. Tsvetkov
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High-Fidelity Multiphysics Modeling of Load Following for 3-D Gas-Cooled Microreactor Assembly Using NEAMS Codes
3:15–3:35PM MST
Ahmed Abdelhameed (ANL), Yan Cao (ANL), Daniel Nunez (ANL), Yinbin Miao (ANL), Kun Mo (ANL), Changho Lee (ANL), Emily Shemon (ANL), Nicolas E. Stauff (ANL)
Paper
Applications of NEAMS Codes for Multiphysics Modeling of Several Microreactors Problems
3:35–3:55PM MST
Nicolas E. Stauff (ANL), Ahmed Abdelhameed (ANL), Yan Cao (ANL), Daniel Nunez (ANL), Yinbin Miao (ANL), Kun Mo (ANL), Changho Lee (ANL), Christopher Matthews (LANL), Emily Shemon (ANL), Justin Thomas (ANL)
Design Optimization of the Holos-Mono Microreactor Concept
3:55–4:15PM MST
Alisha Kasam-Griffith (ANL), Nicolas Stauff (ANL), Yinbin Miao (ANL), Sumit Bhattacharya (ANL), Claudio Filippone (HolosGen)
High Fidelity Multiphysics Simulation of Holos Quad Micro Reactor Design
4:15–4:35PM MST
Changho Lee (ANL), Brent P. Hollrah (ANL), Kristina (ANL), Nicolas E. Stauff (ANL), Ling Zou (ANL), Claudio Filippone (HolosGen)
Application of the Coolant Sleeve Technology to Holos Gas Cooled Microreactors
4:35–4:55PM MST
Nicolas E. Stauff (ANL), Y. Miao (ANL), S. Bhattacharya (ANL), L. Zou (ANL), A. Kasam-Griffith (ANL), C. Filippone (HolosGen)
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